Pular para o conteúdo

Mais visitados

Visitados recentemente

navigation

Exiting Full-Screen Activities on Wear

A user can exit a Wear OS activity by swiping from left to right. If the app has horizontal scrolling (e.g., the type of scrolling available in an app containing maps), a user exits by navigating to the edge of the content and then swiping from left to right.

Pressing the power button returns the user to the watch face.

Refer to the following related resources:

The Swipe-To-Dismiss Gesture

Users swipe from left to right to close the current screen. Therefore, it is recommended that you utilize the following:

It also is recommended that your app does not contain horizontal swiping gestures.

Dismissal of an activity

An activity automatically supports swipe-to-dismiss. Swiping an activity from left to right results in dismissal of the activity, and the app navigates down the back stack.

Fragments

You can wrap a fragment-containing view in the SwipeDismissFrameLayout class, as follows:

public class SwipeDismissFragment extends Fragment {
  private final Callback mCallback =
    new Callback() {
      @Override
        public void onSwipeStart() {
          // optional
        }

        @Override
        public void onSwipeCancelled() {
          // optional
        }

        @Override
        public void onDismissed(SwipeDismissFrameLayout layout) {
          // Code here for custom behavior such as going up the
          // back stack and destroying the fragment but staying in the app.
        }
      };

  @Override
  public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    SwipeDismissFrameLayout swipeLayout = new SwipeDismissFrameLayout(getActivity());

    // If the fragment should fill the screen (optional), then in the layout file,
    // in the android.support.wear.widget.SwipeDismissFrameLayout element,
    // set the android:layout_width and android:layout_height attributes
    // to "match_parent".

    View inflatedView = inflater.inflate(R.layout.swipe_dismiss_frame_layout, swipeLayout, false);
    swipeLayout.addView(inflatedView);
    swipeLayout.addCallback(mCallback);

    return swipeLayout;
    }
}

Note: The SwipeDismissFrameLayout class replaces a similar, deprecated class in the Wearable Support Library.

Horizontal scrollable views

In some cases, such as in a view containing a map that supports panning, the user interface would not prevent horizontal swiping. In this scenario, there are two choices:

To wrap a view in a SwipeDismissFrameLayout object, review the following examples:

XML for a layout file

<android.support.wear.widget.SwipeDismissFrameLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:id="@+id/swipe_dismiss_root" >

    <TextView
        android:id="@+id/test_content"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:gravity="center"
        android:text="Swipe me to dismiss me." />
</android.support.wear.widget.SwipeDismissFrameLayout>

Code snippet

SwipeDismissFrameLayout testLayout =
    (SwipeDismissFrameLayout) activity.findViewById(R.id.swipe_dismiss_root);
testLayout.addCallback(new SwipeDismissFrameLayout.Callback() {
    @Override
    public void onDismissed(SwipeDismissFrameLayout layout) {
        layout.setVisibility(View.GONE);
    }
  }
);

Generally not recommended: Disabling swipe-to-dismiss

Disabling swipe-to-dismiss generally is not recommended because the user expects to dismiss any screen with a swipe. In an exceptional case, you can extend the default theme (in a style resource) and set the android:windowSwipeToDismiss attribute to false:

<resources>
  <style name="AppTheme" parent="@android:style/Theme.DeviceDefault">
    <item name="android:windowSwipeToDismiss">false</item>
  </style>
</resources>

You can then inform users (on their first use of your app) that they can exit the app by pressing the power button.

Dismissal behavior before Wear 2.0

Before Wear 2.0, the DismissOverlayView class was used to implement the long-press for a user to dismiss an app. The DismissOverlayView class no longer should be used.

Additionally, long-pressing to dismiss an app is no longer suggested. Do not implement the long-press for dismissing full screen activities (panning or immersive activities such as Google Maps).

Dismissal via the Power Button

A press of the power (hardware) button sends a power key event. Therefore, you cannot use the power button as a back button or for navigation in general.

When pressed, the power button returns the user to the home screen (watch face). There are two exceptions:

Note that when the power button is pressed, the isFinishing() method of the Activity class does not return true (nor can you intercept the key event).

Este site usa cookies para armazenar suas preferências quanto às opções de idioma e exibição específicas ao site.

Receba as dicas e notícias mais recentes para desenvolvedores Android que ajudarão você a ter sucesso no Google Play.

* Campos obrigatórios

Uhu!

Siga o Google Developers no WeChat

Navegar neste site em ?

Você solicitou uma página em , mas sua preferência de idioma para este site está definida como .

Quer alterar sua preferência de idioma e navegar neste site em ? Para alterar a preferência de idioma depois, use o menu de idiomas na parte inferior de cada página.

É preciso ter o nível de API ou superior para esta aula

Este documento está oculto porque o nível de API selecionado para a documentação é o . Para alterar o nível, clique no seletor acima da barra de navegação esquerda.

Para mais informações sobre como especificar o nível de API que o seu app precisa, leia o artigo Compatibilidade com diferentes versões de plataforma.

Take a short survey?
Help us improve the Android developer experience. (April 2018 — Developer Survey)